Finding the Fourth Proportional to 306.61, 422.08 and 232.70
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Solution
The fourth proportional to 306.61, 422.08 and 232.70 is: 320.33
Step by Step Solution
- Step 1: Write the proportion equation
306.61 : 422.08 = 232.70 : x - Step 2: Convert to fraction form
306.61/422.08 = 232.70/x - Step 3: Cross multiply
306.61x = 422.08 × 232.70 - Step 4: Simplify right side
306.61x = 98,215.32 - Step 5: Solve for x
x = 98,215.32/306.61 - Step 6: Final answer
x = 320.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.